(28657) Briandempsey Main-belt Asteroid
Discovered on 5 April 2000 by LINEAR at Socorro.
Brian Dempsey mentored a finalist in the 2013 Intel Science Talent Search, a science competition for high-school seniors. He teaches at the Acton-Boxborough Regional High School, Acton, Massachusetts.Naming citation (20130225/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Briandempsey is today
Seen from above the solar system on 2026-10-14: Briandempsey is 2.36 au from the Sun and 3.35 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 28657 |
| Provisional designation | 2000 GM28 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.11 km (#16,906 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.329 |
| Absolute magnitude (H) | 15.72 |
| Orbital period | 3.30 years |
| Semi-major axis | 2.21 au |
| Perihelion – aphelion | 2.03 – 2.40 au |
| Eccentricity | 0.0817 |
| Inclination | 1.39° |
| Closest distance between its orbit and Earth's (MOID) | 1.05 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Brian
- (4575) Broman
- (7476) Ogilsbie
- (8262) Carcich
- (8734) Warner
- (10059) McCullough
- (10066) Pihack
- (11371) Camley
- (11374) Briantaylor
- (11723) Briankennedy
- (12562) Briangrazer
- (12592) Brianchen
- (12926) Brianmason
All asteroids named after someone called Brian
Also discovered on 5 April 2000
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- (15563) Remsberg
- (15564) Lateef
- (15565) Benjaminsteele
- (15566) Elizabethbaker
- (15567) Giacomelli
- (15568) Jathe
- (15569) Feinberg
- (15570) von Wolff
- (15573) Richardjoseph
- (15574) Stephaniehass
- (15575) Manyakumar